Ext4 vs XFS Filesystem - Survey of Popularity

[#1]

Wanted to see how many people have clusters where the HDFS DataNodes are running on XFS vs Ext4 filesystems? I'm trying to get a sense for which filesystem is chosen most often in the wild. Feel free to comment if you have a preference for one vs the other.

Thanks!

[#2]

We use all XFS but, during some benchmarks on the jobs, we changed to EXT4 for better performance (1-3% depending on the workflow).

[#3]

@Andrea D'Orio

Is it possible to publish benchmark numbers ?

[#4]

@Neeraj Sabharwal

I had to ask to our customer, but i think there'll be no probelm

[#5]

Has anyone tried BTRFS?

We are testing with that now and have not seen any issues so far.